JP2020106182A - humidifier - Google Patents

humidifier Download PDF

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JP2020106182A
JP2020106182A JP2018244219A JP2018244219A JP2020106182A JP 2020106182 A JP2020106182 A JP 2020106182A JP 2018244219 A JP2018244219 A JP 2018244219A JP 2018244219 A JP2018244219 A JP 2018244219A JP 2020106182 A JP2020106182 A JP 2020106182A
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path
humidifier
opening
water
ultraviolet
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JP7213682B2 (en
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鉄美 越智
Tetsumi Ochi
鉄美 越智
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Nikkiso Co Ltd
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Nikkiso Co Ltd
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Priority to JP2018244219A priority Critical patent/JP7213682B2/en
Priority to CN201911227801.0A priority patent/CN111380116A/en
Priority to TW108147982A priority patent/TWI810423B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Humidification (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Air Conditioning Control Device (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

To provide a new technology that uses ultraviolet light to reduce a risk, such as infection diseases, of a humidifier.SOLUTION: A humidifier includes: a tank which stores water; an atomizer which atomizes the water stored in the tank; a path 18 in which the atomized water flows to the outside; an opening 20 which is formed at one end part 18a of the path and to which the atomized water is sprayed; and an ultraviolet radiation part 22 which radiates ultraviolet light L to the atomized water. The ultraviolet radiation part 22 is configured to radiate the ultraviolet light L from a direction opposite to a direction X in which the atomized water flows to the opening 20.SELECTED DRAWING: Figure 2

Description

本発明は、加湿器に関する。 The present invention relates to a humidifier.

病院や介護施設等の病室や食堂施設において、ウイルス等の感染症の防止は非常に重要な課題である。近年、多くの施設で加湿器が用いられているが、加湿器内のタンク水を放置するとバイオフィルムが形成され、そのバイオフィルムがレジオネラ症の温床となるリスクが報告されている。特に、超音波式の加湿器は加熱を伴わないため、レジオネラ症の温床となるリスクが相対的に高い。その場合、超音波振動子で霧化された水とともに細菌等が外部へ噴霧される。そのため、超音波式の加湿器においては、水を毎日交換し、バイオフィルムを取り除くことが励行されているが、清掃作業の負担が大きい。 Prevention of infectious diseases such as viruses is a very important issue in hospital rooms and nursing facilities such as hospitals and nursing facilities. In recent years, humidifiers have been used in many facilities, but it has been reported that biofilm is formed when tank water in the humidifier is left unattended, and that the biofilm becomes a hotbed of legionellosis. In particular, since the ultrasonic humidifier does not involve heating, the risk of becoming a hotbed of legionellosis is relatively high. In that case, bacteria and the like are sprayed to the outside together with water atomized by the ultrasonic transducer. Therefore, in the ultrasonic humidifier, it is encouraged to exchange water every day to remove the biofilm, but the cleaning work is heavy.

一方、超音波式の加湿器において、霧化する水を蓄える霧化タンク内に紫外線ランプを配置し、タンク内の水を殺菌する方法が考案されている（特許文献１参照）。 On the other hand, in an ultrasonic humidifier, a method has been devised in which an ultraviolet lamp is arranged in an atomizing tank that stores water to be atomized to sterilize the water in the tank (see Patent Document 1).

特許第５９１８４２９号公報Japanese Patent No. 5918429

しかしながら、上述の加湿器は、タンク内の水は殺菌できるものの、噴霧経路に付着した水滴等に起因するバイオフィルに対しては効果が得られない。 However, although the above humidifier can sterilize the water in the tank, it is not effective against the biofill caused by water droplets or the like adhering to the spray path.

本発明はこうした課題に鑑みてなされたものであり、その例示的な目的のひとつは、加湿器による感染症等のリスクを紫外線を用いて低減する新たな技術を提供することにある。 The present invention has been made in view of these problems, and one of the exemplary objects thereof is to provide a new technique for reducing the risk of infectious diseases caused by a humidifier by using ultraviolet rays.

上記課題を解決するために、本発明のある態様の加湿器は、水を収容するタンクと、タンクに収容されている水を霧化する霧化器と、霧化された水が外部へ向かう経路と、経路の一方の端部に形成され、霧化された水が噴霧される開口部と、霧化された水に対して紫外線を照射する紫外線照射部と、を備える。紫外線照射部は、霧化された水が開口部に向かう方向と反対の方向から紫外線を照射するように構成されている。 In order to solve the above problems, a humidifier according to an aspect of the present invention is a tank that stores water, an atomizer that atomizes the water stored in the tank, and the atomized water goes to the outside. A path, an opening formed at one end of the path for spraying atomized water, and an ultraviolet irradiation unit for irradiating the atomized water with ultraviolet rays are provided. The ultraviolet ray irradiation unit is configured to irradiate the atomized water with ultraviolet rays in a direction opposite to the direction toward the opening.

この態様によると、経路内に付着した水滴等によってバイオフィルムが形成され、細菌やウイルス、微生物等（以下、「細菌等」という。）が増殖するような場合であっても、細菌等が霧化された水とともに開口部へ向かう過程で紫外線を照射できる。 According to this aspect, even when bacteria, viruses, microorganisms, etc. (hereinafter referred to as “bacteria, etc.”) grow due to the formation of a biofilm due to water droplets and the like adhering to the inside of the path, the bacteria etc. Ultraviolet rays can be irradiated in the process of moving toward the opening together with the converted water.

紫外線照射部は、経路の内部であって開口部の近傍に配置されていてもよい。仮に、紫外線照射部を開口部から経路の奥側に離れた位置に配置すると、紫外線照射部が経路の奥側に向かって紫外線を照射するため、紫外線照射部と開口部との間で発生した細菌等には紫外線を照射できない。そこで、この態様によると、経路の内部で紫外線が照射されない領域を減らすことができる。 The ultraviolet irradiation unit may be arranged inside the path and near the opening. If the UV irradiator is placed at a position farther from the opening to the far side of the route, the UV irradiator radiates the UV toward the far side of the route. UV rays cannot be radiated to bacteria. Therefore, according to this aspect, it is possible to reduce the area where the ultraviolet rays are not irradiated inside the path.

経路は、紫外線が経路の他方の端部に向けて反射するように構成された反射部が内部に設けられていてもよい。これにより、紫外線が無駄なく照射対象に照射される。 The path may be internally provided with a reflector configured to reflect ultraviolet light toward the other end of the path. As a result, the irradiation target is irradiated with the ultraviolet light without waste.

反射部は、表面がＰＴＦＥまたはＡｌで構成されていてもよい。これにより、紫外線が全反射され、経路の奥まで届き易くなる。また、反射部の表面がＰＴＦＥの場合、バイオフィルムが形成されにくくなる。 The surface of the reflecting portion may be made of PTFE or Al. As a result, the ultraviolet rays are totally reflected and easily reach deep inside the route. Further, when the surface of the reflection part is PTFE, it is difficult to form a biofilm.

紫外線照射部は、ピーク波長が２５０〜３００ｎｍの範囲にある紫外線を照射するＬＥＤを有してもよい。これにより、細菌等を効率良く不活化できる。 The ultraviolet irradiation unit may include an LED that irradiates ultraviolet rays having a peak wavelength in the range of 250 to 300 nm. Thereby, bacteria etc. can be efficiently inactivated.

ＬＥＤは、発光面が経路の他方の端部に向くように配置されていてもよい。これにより、開口部に向かう霧化された水に対して正面から紫外線を照射できるため、より効率良く殺菌できる。 The LED may be arranged such that the light emitting surface faces the other end of the path. As a result, the atomized water toward the opening can be irradiated with ultraviolet rays from the front, so that the sterilization can be performed more efficiently.

ＬＥＤは、開口部から経路の中を見たときに発光面が見えないように配置されていてもよい。これにより、紫外線が外部に漏れることが防止され、加湿器の安全性が向上する。 The LEDs may be arranged such that the light emitting surface is not visible when looking into the path through the opening. This prevents ultraviolet rays from leaking to the outside and improves the safety of the humidifier.

経路は、長さが１０〜２５０ｍｍの範囲であってもよい。ＬＥＤは、出力が３０〜２００ｍＷの範囲であってもよい。これにより、ＬＥＤが照射する紫外線によって経路内の細菌等に対して十分な殺菌が可能となる。 The path may range in length from 10 to 250 mm. The LED may have a power output in the range of 30 to 200 mW. As a result, it becomes possible to sufficiently sterilize bacteria and the like in the path by the ultraviolet rays emitted from the LED.

霧化器は、水をエアロゾルとして霧化する超音波振動子を有してもよい。これにより、加熱が不要な霧化器を備えた加湿器であっても細菌等に対して十分な殺菌が可能となり、装置の簡略化や消費電力の低減を実現できる。 The atomizer may have an ultrasonic transducer that atomizes water as an aerosol. As a result, even a humidifier equipped with an atomizer that does not require heating can sufficiently sterilize bacteria and the like, and can simplify the device and reduce power consumption.

なお、以上の構成要素の任意の組合せ、本発明の表現を方法、装置、システムなどの間で変換したものもまた、本発明の態様として有効である。 It should be noted that any combination of the above constituent elements and the expression of the present invention converted between methods, devices, systems, etc. are also effective as an aspect of the present invention.

本発明によれば、加湿器による感染症等のリスクを低減できる。 According to the present invention, the risk of infectious diseases caused by a humidifier can be reduced.

本実施の形態に係る加湿器の概略構成を示す断面図である。It is sectional drawing which shows schematic structure of the humidifier which concerns on this Embodiment. 図１に示す領域Ｒの拡大断面図である。It is an expanded sectional view of the area|region R shown in FIG. 図１の開口部近傍を模式的に示した斜視図である。It is the perspective view which showed typically the opening vicinity of FIG.

以下、本発明の実施の形態について図面を参照して説明する。なお、図面の説明において同一の要素には同一の符号を付し、重複する説明を適宜省略する。また、各図面における各構成要素の寸法比は、必ずしも実際の加湿器の寸法比と一致しない。また、以下に述べる構成は例示であり、本発明の範囲を何ら限定するものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description. Moreover, the dimensional ratio of each component in each drawing does not necessarily match the dimensional ratio of an actual humidifier. Further, the configurations described below are examples, and do not limit the scope of the present invention.

図１は、本実施の形態に係る加湿器の概略構成を示す断面図である。図１に示す加湿器１０は、水Ｗを収容するタンク１２と、タンク１２に収容されている水Ｗを霧化する霧化器１４と、霧化された水（以下、適宜「エアロゾル１６」と称する。）が外部へ向かう筒状の経路１８と、経路１８の一方の端部１８ａに形成され、エアロゾル１６が噴霧される開口部２０と、エアロゾル１６を開口部２０に向けて送り出すファン２１と、エアロゾル１６に対して紫外線を照射する紫外線照射部２２と、霧化器１４および紫外線照射部２２の動作を制御する制御部２４と、前述の各部を収容する筐体２６と、を備える。なお、エアロゾル(ａｅｒｏｓｏｌ）とは、気体中に浮遊する微小な液体または固体の粒子をいう。 FIG. 1 is a sectional view showing a schematic configuration of the humidifier according to the present embodiment. The humidifier 10 shown in FIG. 1 includes a tank 12 that contains water W, an atomizer 14 that atomizes the water W that is contained in the tank 12, and atomized water (hereinafter, appropriately referred to as “aerosol 16”). Is formed at one end 18a of the path 18, and a fan 21 that sends the aerosol 16 toward the opening 20 is formed at one end 18a of the path 18. An ultraviolet irradiation unit 22 that irradiates the aerosol 16 with ultraviolet rays, a control unit 24 that controls the operations of the atomizer 14 and the ultraviolet irradiation unit 22, and a housing 26 that houses the above-described units. It should be noted that the aerosol refers to fine liquid or solid particles suspended in a gas.

図２は、図１に示す領域Ｒの拡大断面図である。図３は、図１の開口部近傍を模式的に示した斜視図である。図２に示すように、紫外線照射部２２は、エアロゾル１６が開口部２０に向かう方向Ｘと反対の方向から紫外線Ｌを照射するように構成されている。なお、反対の方向とは、エアロゾル１６が開口部２０に向かう方向Ｘと正反対の方向だけでなく、方向Ｘに対して斜めの方向であってもよい。 FIG. 2 is an enlarged cross-sectional view of the region R shown in FIG. FIG. 3 is a perspective view schematically showing the vicinity of the opening in FIG. As shown in FIG. 2, the ultraviolet irradiation unit 22 is configured to irradiate the ultraviolet rays L from a direction opposite to the direction X in which the aerosol 16 is directed toward the opening 20. The opposite direction is not limited to the direction opposite to the direction X in which the aerosol 16 is directed toward the opening 20, but may be the direction oblique to the direction X.

本実施の形態に係る加湿器１０は、仮に経路１８内に付着した水滴等によってバイオフィルムが形成され、細菌等が増殖するような場合であっても、細菌等がエアロゾル１６とともに開口部２０へ向かう過程で紫外線Ｌを照射できる。 In the humidifier 10 according to the present embodiment, even if a biofilm is formed by water droplets and the like that have adhered to the inside of the path 18 and bacteria and the like grow, the bacteria and the like enter the opening 20 together with the aerosol 16. Ultraviolet rays L can be emitted in the process of heading.

また、本実施の形態に係る紫外線照射部２２は、経路１８の内部であって開口部２０の近傍に配置されている。ここで、開口部２０の近傍とは、例えば、開口部２０から経路１８の内部に向かって２０ｍｍ以内の範囲である。仮に、紫外線照射部２２を開口部２０から経路１８の奥側に離れた位置に配置すると、紫外線照射部２２が経路１８の奥側に向かって紫外線を照射するため、紫外線照射部２２と開口部２０との間で発生した細菌等には紫外線を照射できない。一方、本実施の形態に係る加湿器１０は、経路１８の内部で紫外線Ｌが照射されない領域を減らすことができる。 Further, the ultraviolet irradiation unit 22 according to the present embodiment is arranged inside the path 18 and near the opening 20. Here, the vicinity of the opening 20 is, for example, a range within 20 mm from the opening 20 toward the inside of the path 18. If the ultraviolet irradiation unit 22 is arranged at a position away from the opening 20 on the inner side of the path 18, the ultraviolet irradiation unit 22 irradiates the ultraviolet toward the inner side of the path 18. Bacteria and the like generated between 20 and 20 cannot be irradiated with ultraviolet rays. On the other hand, the humidifier 10 according to the present embodiment can reduce the area inside the path 18 where the ultraviolet rays L are not irradiated.

経路１８は、紫外線Ｌが経路１８の他方の端部１８ｂに向けて反射するように構成された筒状の反射部２８が挿入され、内壁１８ｃに固定された状態で、内部に設けられている。これにより、紫外線照射部２２から出射した紫外線Ｌや反射部２８で反射された紫外線Ｌ’が、照射対象であるエアロゾル１６に無駄なく照射される。そのため、より出力の小さい紫外線照射部２２を用いることが可能となり、加湿器のコストや消費電力を低減できる。 The passage 18 is provided inside in a state where a tubular reflecting portion 28 configured to reflect the ultraviolet rays L toward the other end 18b of the passage 18 is inserted and fixed to the inner wall 18c. .. As a result, the ultraviolet ray L emitted from the ultraviolet ray irradiating section 22 and the ultraviolet ray L'reflected by the reflecting section 28 are irradiated to the aerosol 16 as the irradiation target without waste. Therefore, it becomes possible to use the ultraviolet irradiation unit 22 having a smaller output, and the cost and power consumption of the humidifier can be reduced.

本実施の形態に係る紫外線照射部２２は、ピーク波長が２５０〜３００ｎｍの範囲にある深紫外線を照射するＬＥＤ２２ａを有する。これにより、ＬＥＤ２２ａは、ある程度の照射範囲と指向性があるため、細長い経路１８内に存在する細菌等を効率良く不活化できる。なお、ＬＥＤ２２ａが発する深紫外線のピーク波長は２６０〜２９０ｎｍの範囲が好ましく、２７５〜２８５ｎｍの範囲がより好ましい。 The ultraviolet irradiation unit 22 according to the present embodiment has an LED 22a that irradiates deep ultraviolet having a peak wavelength in the range of 250 to 300 nm. As a result, the LED 22a has a certain irradiation range and directivity, and thus bacteria and the like existing in the elongated path 18 can be efficiently inactivated. The peak wavelength of the deep ultraviolet rays emitted from the LED 22a is preferably in the range of 260 to 290 nm, more preferably 275 to 285 nm.

また、本実施の形態に係る反射部２８は、表面（反射面）がＰＴＦＥまたはＡｌで構成されている。例えば、純アルミニウム（ＪＩＳ１０００番台）の表面を電解研磨したものが好ましい。このように構成された反射部２８は、紫外線を効率良く反射できるため、紫外線が無駄なく照射対象に照射される。また、反射部２８の表面がＰＴＦＥの場合、水滴が付着しにくいため、バイオフィルムが形成されにくくなる。これらの材料は、深紫外線が全反射され、経路の奥まで届き易くなる。 Further, the reflecting portion 28 according to the present embodiment has a surface (reflection surface) made of PTFE or Al. For example, pure aluminum (JIS 1000 series) whose surface is electrolytically polished is preferable. The reflecting portion 28 configured as described above can efficiently reflect ultraviolet rays, and thus the ultraviolet rays are irradiated to the irradiation target without waste. Further, when the surface of the reflecting portion 28 is made of PTFE, water droplets are less likely to adhere to it, and thus a biofilm is less likely to be formed. Deep ultraviolet rays are totally reflected by these materials, and they easily reach deep inside the path.

本実施の形態に係るＬＥＤ２２ａは、図２に示すように、発光面２２ｂが経路１８の他方の端部１８ｂに向くように配置されている。これにより、開口部２０に向かうエアロゾル１６に対して正面から紫外線Ｌを照射できるため、より効率良く殺菌できる。 As shown in FIG. 2, the LED 22a according to the present embodiment is arranged such that the light emitting surface 22b faces the other end 18b of the path 18. As a result, the aerosol 16 toward the opening 20 can be irradiated with the ultraviolet rays L from the front, so that the sterilization can be performed more efficiently.

また、本実施の形態に係るＬＥＤ２２ａは、開口部２０から経路１８の中を見たときに発光面２２ｂが直接見えないように配置されている。これにより、紫外線Ｌが外部に漏れることが防止され、加湿器１０の安全性が向上する。 Further, the LED 22a according to the present embodiment is arranged so that the light emitting surface 22b cannot be directly seen when the inside of the path 18 is seen through the opening 20. This prevents the ultraviolet rays L from leaking to the outside and improves the safety of the humidifier 10.

本実施の形態に係る経路１８は、長さが１０〜２５０ｍｍの範囲であるとよい。経路１８の長さが短いとエアロゾル１６が外部へ噴霧されるまでの時間が短く、エアロゾル１６に対して十分な紫外線を照射できない場合がある。一方、経路１８が長すぎると、ＬＥＤ２２ａが照射する紫外線が経路１８の他方の端部１８ｂまで届きにくくなり、いたずらに加湿器１０の大型化を招いたり、出力が大きく高価なＬＥＤを採用したりする必要が生じる。なお、経路の長さとは、例えば、タンク１２内の水面１２ａから開口部２０までの最短距離ととらえてもよいし、経路１８を構成する筒状の部分の長さととらえてもよい。 The path 18 according to the present embodiment may have a length in the range of 10 to 250 mm. If the length of the path 18 is short, it takes a short time until the aerosol 16 is sprayed to the outside, and it may not be possible to irradiate the aerosol 16 with sufficient ultraviolet rays. On the other hand, if the path 18 is too long, it becomes difficult for the ultraviolet light emitted by the LED 22a to reach the other end 18b of the path 18, which unnecessarily invites an increase in the size of the humidifier 10, or the use of an LED with a large output and high cost. Need to do so. The length of the route may be regarded as, for example, the shortest distance from the water surface 12a in the tank 12 to the opening 20, or the length of the tubular portion forming the route 18.

また、ＬＥＤ２２ａは、出力が３０〜２００ｍＷの範囲であるとよい。このように、経路１８の長さとＬＥＤ２２ａの出力を適切に選択することで、比較的出力が小さく安価なＬＥＤ２２ａを用いても経路１８内の細菌等に対して十分な殺菌が可能となる。 The output of the LED 22a is preferably in the range of 30 to 200 mW. As described above, by appropriately selecting the length of the path 18 and the output of the LED 22a, it is possible to sufficiently sterilize the bacteria and the like in the path 18 even if the LED 22a that has a relatively small output and is inexpensive is used.

本実施の形態に係る霧化器１４は、水Ｗをエアロゾル１６として霧化する超音波振動子１４ａを有している。このような加熱が不要な霧化器１４を備えた加湿器１０であっても細菌等に対して十分な殺菌が可能となり、装置の簡略化や消費電力の低減を実現できる。 The atomizer 14 according to the present embodiment has an ultrasonic transducer 14a that atomizes the water W as the aerosol 16. Even with the humidifier 10 including the atomizer 14 that does not require such heating, bacteria and the like can be sufficiently sterilized, and the device can be simplified and the power consumption can be reduced.

なお、本実施の形態に係る加湿器１０は、細菌等が増殖する可能性がある方式の霧化器を備えた場合であれば、感染症等のリスクを低減する効果が得られる。また、タンク１２内にも深紫外線を照射するＬＥＤを配置してもよい。 In addition, if the humidifier 10 according to the present embodiment is provided with an atomizer of a system in which bacteria and the like may grow, the effect of reducing the risk of infectious diseases and the like can be obtained. Further, an LED that irradiates deep ultraviolet rays may be arranged in the tank 12.

以上、本発明を上述の実施の形態を参照して説明したが、本発明は上述の実施の形態に限定されるものではなく、実施の形態の構成を適宜組み合わせたものや置換したものについても本発明に含まれるものである。また、当業者の知識に基づいて実施の形態における組合せや処理の順番を適宜組み替えることや各種の設計変更等の変形を実施の形態に対して加えることも可能であり、そのような変形が加えられた実施の形態も本発明の範囲に含まれうる。 Although the present invention has been described above with reference to the above-described exemplary embodiments, the present invention is not limited to the above-described exemplary embodiments, and the configurations of the exemplary embodiments may be appropriately combined or replaced. It is included in the present invention. Further, it is also possible to appropriately rearrange the combination and the order of processing in the embodiment based on the knowledge of those skilled in the art, and to add modifications such as various design changes to the embodiment. The provided embodiments can also be included in the scope of the present invention.

１０ 加湿器、 １２ タンク、 １４ 霧化器、 １４ａ 超音波振動子、 １６ エアロゾル、 １８ 経路、 １８ａ 一方の端部、 １８ｂ 他方の端部、 １８ｃ 内壁、 ２０ 開口部、 ２２ 紫外線照射部、 ２２ａ ＬＥＤ、 ２２ｂ 発光面、 ２４ 制御部、 ２６ 筐体、 ２８ 反射部。 10 Humidifier, 12 Tank, 14 Atomizer, 14a Ultrasonic transducer, 16 Aerosol, 18 Path, 18a One end part, 18b Other end part, 18c Inner wall, 20 Opening part, 22 Ultraviolet irradiation part, 22a LED , 22b light emitting surface, 24 control unit, 26 housing, 28 reflection unit.

Claims (9)

水を収容するタンクと、
前記タンクに収容されている水を霧化する霧化器と、
霧化された水が外部へ向かう経路と、
前記経路の一方の端部に形成され、前記霧化された水が噴霧される開口部と、
霧化された水に対して紫外線を照射する紫外線照射部と、を備え、
前記紫外線照射部は、前記霧化された水が前記開口部に向かう方向と反対の方向から紫外線を照射するように構成されていることを特徴とする加湿器。 A tank containing water,
An atomizer for atomizing the water contained in the tank,
The path of atomized water going out,
An opening formed at one end of the path, into which the atomized water is sprayed,
An ultraviolet irradiation unit that irradiates the atomized water with ultraviolet rays,
The humidifier, wherein the ultraviolet irradiation unit is configured to irradiate the atomized water with ultraviolet light in a direction opposite to a direction toward the opening. 前記紫外線照射部は、前記経路の内部であって前記開口部の近傍に配置されていることを特徴とする請求項１に記載の加湿器。 The humidifier according to claim 1, wherein the ultraviolet irradiation unit is arranged inside the path and near the opening. 前記経路は、前記紫外線が前記経路の他方の端部に向けて反射するように構成された反射部が内部に設けられていることを特徴とする請求項１または２に記載の加湿器。 The humidifier according to claim 1 or 2, wherein the path is internally provided with a reflection portion configured to reflect the ultraviolet light toward the other end of the path. 前記反射部は、表面がＰＴＦＥまたはＡｌで構成されていることを特徴とする請求項３に記載の加湿器。 The humidifier according to claim 3, wherein a surface of the reflecting portion is made of PTFE or Al. 前記紫外線照射部は、ピーク波長が２５０〜３００ｎｍの範囲にある紫外線を照射するＬＥＤを有することを特徴とする請求項１乃至４のいずれか１項に記載の加湿器。 The humidifier according to any one of claims 1 to 4, wherein the ultraviolet irradiation unit has an LED that irradiates ultraviolet rays having a peak wavelength in the range of 250 to 300 nm. 前記ＬＥＤは、発光面が前記経路の他方の端部に向くように配置されていることを特徴とする請求項５に記載の加湿器。 The humidifier according to claim 5, wherein the LED is arranged so that a light emitting surface thereof faces the other end of the path. 前記ＬＥＤは、前記開口部から前記経路の中を見たときに前記発光面が見えないように配置されていることを特徴とする請求項６に記載の加湿器。 The humidifier according to claim 6, wherein the LED is arranged so that the light emitting surface cannot be seen when the inside of the path is seen through the opening. 前記経路は、長さが１０〜２５０ｍｍの範囲であり、
前記ＬＥＤは、出力が３０〜２００ｍＷの範囲である、
ことを特徴とする請求項５乃至７のいずれか１項に記載の加湿器。 The path has a length in the range of 10 to 250 mm,
The LED has an output in the range of 30 to 200 mW,
The humidifier according to any one of claims 5 to 7, characterized in that. 前記霧化器は、水をエアロゾルとして霧化する超音波振動子を有することを特徴とする請求項１乃至８のいずれか１項に記載の加湿器。 The humidifier according to any one of claims 1 to 8, wherein the atomizer includes an ultrasonic vibrator that atomizes water as an aerosol.
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